Label-free enrichment of functional cardiomyocytes using microfluidic deterministic lateral flow displacement.

Label-free enrichment of functional cardiomyocytes using microfluidic deterministic lateral flow displacement.
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DOI:
10.1371/journal.pone.0037619
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Radisic M
Radisic M
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zhang B;Green JV;Murthy SK;Radisic M

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心脏细胞替代疗法和组织工程的进展关键取决于我们从异质细胞混合物中分离功能性心肌细胞(CM)的能力。心肌细胞的无标记富集对于基于细胞的产品的未来临床应用是期望的。利用CMs的物理特性,设计了一种微流控系统,利用确定性侧向位移(DLD)原理,基于大小从新生大鼠心脏组织消化液中分离CMs。我们首次证明了直接从消化的心脏组织中富集高达91±2.4%的功能性CM,而无需任何预处理或标记。富集的心肌细胞在分选后仍然存活,并在三维培养中形成可收缩的心脏斑块。这项工作的广泛意义在于证明从原代组织消化物中富集功能性细胞,直接导致工程化组织的产生。
Progress in cardiac cell replacement therapies and tissue engineering critically depends on our ability to isolate functional cardiomyocytes (CMs) from heterogeneous cell mixtures. Label-free enrichment of cardiomyocytes is desirable for future clinical application of cell based products. Taking advantage of the physical properties of CMs, a microfluidic system was designed to separate CMs from neonatal rat heart tissue digest based on size using the principles of deterministic lateral displacement (DLD). For the first time, we demonstrate enrichment of functional CMs up to 91±2.4% directly from the digested heart tissue without any pre-treatment or labeling. Enriched cardiomyocytes remained viable after sorting and formed contractile cardiac patches in 3-dimensional culture. The broad significance of this work lies in demonstrating functional cell enrichment from the primary tissue digest leading directly to the creation of the engineered tissue.
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